Variable beam shaping element

Details Variable beam shaping element Variable beam shaping element

2007-12-18

2007-12-18

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

Fluid

C359S666000

Reexamination Certificate

active

10564535

ABSTRACT:
A beam-shaping element includes a cavity, a first fluid and a second fluid having different indices of refraction. An optical axis extends through the cavity. The cavity has at least one curved surface extending transverse the optical axis. At least one pump is arranged to pump the fluids between a first configuration in which the first fluid occupies the cavity, and a second configuration in which the second fluid occupies the cavity.

REFERENCES:
patent: 4890914 (1990-01-01), Templeton
patent: 6288846 (2001-09-01), Stoner, Jr.
patent: 6418108 (2002-07-01), Ueda et al.
patent: 2002/0090168 (2002-07-01), Bartels
patent: 03034748 (2003-04-01), None
JP 20011553 74 “Record/Reproducing Optical System, and Optical Head Device”.
JP 2002074733 “Optical Pickup Device”.
5-54414 (A); Mar. 3, 1993 “Optical Pickup Device”.
ISR Publication, International Publication No. WO2005/006312A1.

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